Taiwan Semiconductor Corporation SFAF2004GH

Overview

SFAF2004GH from Taiwan Semiconductor is a 20 A, 200 V repetitive peak reverse voltage (V_RRM) super fast rectifier in ITO-220AC package, featuring 35 ns reverse recovery time (t_rr), 0.975 V forward voltage at 20 A/25°C, and AEC-Q101 qualification for automotive-grade reliability - used in DC-DC converters and switching-mode inverters.

For engineers reviewing the SFAF2004GH datasheet, SFAF2004GH pinout, SFAF2004GH application, or SFAF2004GH equivalent, key selection criteria include V_RRM = 200 V, t_rr ≤ 35 ns, I_F = 20 A continuous, junction-to-case thermal resistance of 3°C/W, and AEC-Q101 qualification status.

Technical Context

This super fast rectifier employs a glass passivated silicon die optimized for high-efficiency switching applications. Its 35 ns reverse recovery time enables operation in high-frequency SMPS topologies up to several hundred kHz while maintaining low switching losses.

The device supports 200 A non-repetitive surge current (I_FSM) and operates across -55°C to +150°C junction temperature range. Thermal performance is defined by R_θJC = 3°C/W, enabling effective heat transfer to heatsinks when mounted with ≤0.56 N·m torque.

Key Specifications

Pinout & Package

Package: ITO-220AC - insulated TO-220 variant with isolated tab, UL 94V-0 molding compound, matte tin-plated leads compliant with J-STD-002 solderability, and polarity marked on device body.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar super fast rectifier applications.

Compared with STTH2002CT and MUR2020CT, the SFAF2004GH offers identical t_rr but lower V_F and guaranteed AEC-Q101 qualification in a single-diode ITO-220AC package - simplifying layout, reducing thermal stress, and meeting automotive functional safety requirements without derating.

Availability

SFAF2004GH is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive power supplies requiring stable component supply with AEC-Q101 assurance and consistent thermal performance.

Supply support for SFAF2004GH includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, automotive, and consumer markets since 1979.

The SFAF2004GH belongs to TSC's AEC-Q101-qualified super fast rectifier product line, engineered for high-efficiency, high-reliability power conversion in harsh-environment applications including engine control units and industrial motor drives.

FAQ

What is the peak repetitive reverse voltage rating for SFAF2004GH?

The SFAF2004GH has a repetitive peak reverse voltage (V_RRM) rating of 200 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2105). It defines the maximum reverse-biased voltage the device can block repeatedly without breakdown under normal operating conditions. Exceeding this rating risks avalanche failure or permanent degradation.

Is SFAF2004GH qualified to AEC-Q101 standards?

Yes, the "H" suffix in SFAF2004GH explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering information. The device undergoes stress testing including temperature cycling, humidity bias HAST, and mechanical shock per AEC-Q101 Rev D. This qualification confirms suitability for automotive power electronics such as body control modules and ADAS power supplies.

What is the forward voltage drop of SFAF2004GH at rated current?

The SFAF2004GH exhibits a typical forward voltage (V_F) of 0.975 V at I_F = 20 A and T_J = 25°C, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the conduction loss baseline. At elevated junction temperatures, V_F decreases slightly due to negative temperature coefficient of silicon.

Does SFAF2004GH have an electrically isolated tab?

Yes, the SFAF2004GH uses the ITO-220AC package, where "I" stands for insulated. The metal tab is electrically isolated from both anode and cathode terminals, verified by the package outline drawing and mechanical data section. This isolation allows direct heatsink mounting without additional insulating hardware, simplifying thermal design in high-voltage applications.

What is the reverse recovery time specification for SFAF2004GH?

The SFAF2004GH has a maximum reverse recovery time (t_rr) of 35 ns, tested under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This parameter is critical for minimizing switching losses in high-frequency SMPS. The value is consistent across the SFAF2001G–SFAF2004G subgroup and is validated in the Electrical Specifications table and Figure 6 test circuit diagram.